Some of pop's biggest hitmakers are asking artists to stop taking credit for songs they didn't write.

In an open letter, the writers behind songs like Dua Lipa's New Rules and Ariana Grande's 7 Rings said "a growing number of artists" were demanding a share of publishing royalties, even if they had contributed nothing to a song.

"These artists will go on to collect revenue from touring, merchandise [and] brand partnerships," they said, but "songwriters have only their publishing revenue as a means of income".

They added that composers were often subjected to "bully tactics and threats" by artists and executives who wanted to take a share of the songwriting royalties.